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KAR Laboratories





KAR Laboratories Offers 1,4-DIOXANE Testing For Water, Groundwater, and Soil

1,4-Dioxane is a common solvent and stabilizer for certain chlorinated solvents such as TCA. It is often simply called "Dioxane" because the other two isomers 1,2- and 1,3- are rarely encountered. Chemically an ether, this carcinogenic chemical can be challenging to correctly analyze at lower levels. Typically popular laboratory techniques such as Purge&Trap-Gas Chromatography-Mass Spectroscopy result in inefficient purge recovery because Henry's Law constant greatly favors Dioxane in the aqueous (liquid) phase over the gaseous phase. Another factor working against low-level detection is Dioxane's relatively high boiling point for an organic solvent, roughly the same as water. Most laboratories will struggle to document a valid reporting level of 100-250 ug/L (parts per billion or ppb) in water. KAR Laboratories can achieve a reporting limit of 50 ug/L by optimization of the analytical conditions.

There is no Federal Drinking Water Maximum Contaminant Level (MCL) set for Dioxane. A draft MDEQ drinking water criterion is 7.2 ug/L. To protect human health, a lower level of detection is needed.

KAR Laboratories uses a method called Elevated Temperature Purge&Trap-Gas Chromatography-Selective Ion Monitoring Mass Spectroscopy. This technique can routinely achieve sub-ppb method detection limits with a reporting level of 1 ug/L in water and 50 ug/kg in soil. KAR has reported several hundred samples in the past few years and has detected alarming concentrations; several dozen samples found to be in the 1000-2000 ug/L range.

The cost for the test is $150/sample which includes the sample containers. Please contact one of our project managers for more details or to order bottles.


KAR Laboratories, Inc.

269.381.9666* M-F 8-5 EST